Adding VideoCaptureDevice for Mac.

media/media.gyp

Index: media/media.gyp
diff --git a/media/media.gyp b/media/media.gyp
index 1e402ebdd20d79e3d93515b89980ded10b8b165e..68169f7d038ab42f3971c2dce63710a83ce27b63 100644
--- a/media/media.gyp
+++ b/media/media.gyp
@@ -204,6 +204,10 @@
         'video/capture/fake_video_capture_device.h',
         'video/capture/linux/video_capture_device_linux.cc',
         'video/capture/linux/video_capture_device_linux.h',
+        'video/capture/mac/video_capture_device_mac.h',
+        'video/capture/mac/video_capture_device_mac.mm',
+        'video/capture/mac/video_capture_device_mac_qtkit.h',
+        'video/capture/mac/video_capture_device_mac_qtkit.mm',
         'video/capture/video_capture.h',
         'video/capture/video_capture_device.h',
         'video/capture/video_capture_device_dummy.cc',
@@ -327,7 +331,7 @@
             'audio/openbsd/audio_manager_openbsd.h',
           ],
         }],
-        ['os_posix == 1 and OS != "mac"', {
+        ['os_posix == 1', {
           'sources!': [
             'video/capture/video_capture_device_dummy.cc',
             'video/capture/video_capture_device_dummy.h',
@@ -339,6 +343,8 @@
               '$(SDKROOT)/System/Library/Frameworks/AudioUnit.framework',
               '$(SDKROOT)/System/Library/Frameworks/AudioToolbox.framework',
               '$(SDKROOT)/System/Library/Frameworks/CoreAudio.framework',
+              '$(SDKROOT)/System/Library/Frameworks/CoreVideo.framework',
+              '$(SDKROOT)/System/Library/Frameworks/QTKit.framework',
             ],
           },
         }],
@@ -587,7 +593,9 @@
         'filters/ffmpeg_video_decoder_unittest.cc',
         'filters/file_data_source_unittest.cc',
         'filters/video_renderer_base_unittest.cc',
+        'video/capture/mac/video_capture_device_unittest_helper_mac.mm',
         'video/capture/video_capture_device_unittest.cc',
+        'video/capture/video_capture_device_unittest_helper.h',
         'video/ffmpeg_video_decode_engine_unittest.cc',
         'webm/cluster_builder.cc',
         'webm/cluster_builder.h',